Beaumont's century, off 47 deliveries, was the second fastest in women's T20 history and she equalled the record of 22 boundaries in a T20 innings, set by Australia's Meg Lanning.

Beaumont was given support by opening partner Danni Wyatt, who struck 56 off 36 balls, while Katherine Brunt made an unbeaten 42 off 16.

England men's highest T20 score is 230-8.

Media playback is not supported on this device

Beaumont reaches second-fastest women's T20 century

South Africa's Masabata Klaas took 0-59 and Stacy Lackay 2-59 from four overs, the most expensive bowling figures in T20 internationals.

Pace bowler Marizanne Kapp bowled only two overs before leaving the field with heart palpitations.

"Her heart rate was going up a lot higher than it should," said Dane van Niekerk, who made 72. "She didn't want to come off but I told her to get off the field.

"Thanks to England, she's seen the doctor and hopefully she's OK."

The tri-series continues at the same venue on Saturday, with England facing South Africa at 13:00 BST and New Zealand at 17:40.

Media playback is not supported on this device

England women break T20 record with Brunt six

A 'perfect performance' and a 'proper hiding' - what they said

England captain Heather Knight on Sky Sports: "Our coach Mark Robinson told us not to think about New Zealand's record. But while the batting will get the headlines, our bowling was outstanding. This was close to a perfect performance."

South Africa skipper Dane van Niekerk on Sky Sports: "We got a proper hiding from both teams today. I can't fault the batters, but our bowling is an area of concern, we're all over the place at the moment. We spoke between games about what we wanted to do, but did the complete opposite."

Player of the match Tammy Beaumont on her third successive international century: "It's pretty pleasing to contribute to these wins - our assistant coach Ali Maiden said to me 'I bet you can't get three in three'."